CN108693441A - A kind of electric transmission line isolator recognition methods and system - Google Patents

A kind of electric transmission line isolator recognition methods and system Download PDF

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Publication number
CN108693441A
CN108693441A CN201810338067.4A CN201810338067A CN108693441A CN 108693441 A CN108693441 A CN 108693441A CN 201810338067 A CN201810338067 A CN 201810338067A CN 108693441 A CN108693441 A CN 108693441A
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transmission line
model
image
images
aerial images
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CN108693441B (en
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翟永杰
程海燕
刘鑫月
张木柳
赵振兵
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North China Electric Power University
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North China Electric Power University
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08Locating faults in cables, transmission lines, or networks
    • G01R31/081Locating faults in cables, transmission lines, or networks according to type of conductors
    • G01R31/085Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08Locating faults in cables, transmission lines, or networks
    • G01R31/088Aspects of digital computing

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  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
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Abstract

The invention discloses a kind of electric transmission line isolator recognition methods and systems.This method includes:Obtain analog image and historical background image, the analog image is the simulation Aerial Images of transmission line of electricity, the analog image for no background insulation subgraph;Neural network model is trained by the analog image and the historical background image, obtains Classification and Identification model;Transmission line of electricity is shot, multiple current Aerial Images of transmission line of electricity are obtained;Color division is carried out to the multiple current Aerial Images by hexagonal vertebral model, obtains the pre-selected images of different colour systems;According to the electric transmission line isolator in the pre-selected images of different colour systems described in the Classification and Identification Model Identification.The method or system provided through the invention can accurately and rapidly identify the insulator of transmission line of electricity.

Description

A kind of electric transmission line isolator recognition methods and system
Technical field
The present invention relates to insulators to identify field, more particularly to a kind of electric transmission line isolator recognition methods and system.
Background technology
For insulator as the key equipment in transmission line of electricity, status monitoring is particularly important to the stable operation of power grid.Absolutely Edge is one of the important equipment in overhead transmission line rack, and playing mechanical support and electric insulation prevents the work on electric current time ground With, while being also one of Frequent Troubles element, the failures such as damaged, self-destruction, crackle and foreign matter seriously threaten the peace of transmission line of electricity Full reliability service.According to statistics, in the transmission line of electricity accident occurred at present, trip event caused by insulator breakdown accounts for 81.3%. Therefore, the failure of insulator is particularly significant in investigation transmission line of electricity in time.
Invention content
The object of the present invention is to provide a kind of electric transmission line isolator recognition methods and systems, accurately and rapidly to know The insulator of other transmission line of electricity, the failure for insulator in investigation transmission line of electricity road in time provide safeguard.
To achieve the above object, the present invention provides following schemes:
A kind of electric transmission line isolator recognition methods, the method includes:
Analog image and historical background image are obtained, the analog image is the simulation Aerial Images of transmission line of electricity, described Analog image for no background insulation subgraph;
Neural network model is trained by the analog image and the historical background image, obtains Classification and Identification Model;
Transmission line of electricity is shot, multiple current Aerial Images of transmission line of electricity are obtained;
Color division is carried out to the multiple current Aerial Images by hexagonal vertebral model, obtains the pre-selection of different colour systems Image;
According to the electric transmission line isolator in the pre-selected images of different colour systems described in the Classification and Identification Model Identification.
Optionally, described that neural network model is trained by the analog image, Classification and Identification model is obtained, is had Body includes:
Classified to the analog image and the historical background image by the neural network model, obtains background Figure output data and insulation subgraph output data;
Judge the Background output data and insulation sub-image data whether within the scope of error threshold;
It is no to be, it is determined that the neural network model is Classification and Identification model;
If it is not, then adjusting the parameter of the neural network model, make the Background output data and insulation subgraph Data obtain Classification and Identification model within the scope of error threshold.
Optionally, described that color division is carried out to the multiple current Aerial Images by hexagonal vertebral model, it obtains not With the pre-selected images of colour system, specifically include:
The value range of tone, saturation degree and lightness in acquisition hexagonal vertebral model;
According to the value range of tone, saturation degree and lightness in the hexagonal vertebral model, to the multiple current Aerial Images carry out color division, obtain the pre-selected images of different colour systems.
Optionally, the tone according in the hexagonal vertebral model, saturation degree and lightness value range, to institute It states multiple current Aerial Images and carries out color division, obtain the pre-selected images of different colour systems, specifically include:
Obtain the pixel value of each pixel in each current Aerial Images;
According in the pixel value of each pixel in each current Aerial Images and the hexagonal vertebral model tone, The value range of saturation degree and lightness determines the corresponding colour system of each current Aerial Images, obtains the pre-selected images of different colour systems.
A kind of electric transmission line isolator identifying system, the system comprises:
Image collection module, for obtaining analog image and historical background image, the analog image is transmission line of electricity Simulate Aerial Images, the analog image for no background insulation subgraph;
Training module, for being instructed to neural network model by the analog image and the historical background image Practice, obtains Classification and Identification model;
Taking module obtains multiple current Aerial Images of transmission line of electricity for being shot to transmission line of electricity;
Pre-selected images division module is drawn for carrying out color to the multiple current Aerial Images by hexagonal vertebral model Point, obtain the pre-selected images of different colour systems;
Identification module, it is exhausted for the transmission line of electricity in the pre-selected images of different colour systems described in the Classification and Identification Model Identification Edge.
Optionally, the training module includes:
Taxon, for being carried out to the analog image and the historical background image by the neural network model Classification obtains Background output data and insulation subgraph output data;
Judging unit, for judging the Background output data and insulation sub-image data whether in error threshold model In enclosing;
Determination unit is connect with the judgment module, for working as the Background output data and insulator picture number When according within the scope of error threshold, determine that the neural network model is Classification and Identification model;And for working as the Background When output data and insulation sub-image data be not within the scope of error threshold, the parameter of the neural network model is adjusted, is made The Background output data and insulation sub-image data obtain Classification and Identification model within the scope of error threshold.
Optionally, the pre-selected images division module includes:
Value range acquiring unit, for obtaining the tone in hexagonal vertebral model, saturation degree and the value model of lightness It encloses;
Pre-selected images division unit, for being taken according to the tone in the hexagonal vertebral model, saturation degree and lightness It is worth range, color division is carried out to the multiple current Aerial Images, obtains the pre-selected images of different colour systems.
Optionally, the pre-selected images division unit includes:
Pixel value obtains subelement, the pixel value for obtaining each pixel in each current Aerial Images;
Subelement is divided, the value range according to tone, saturation degree and lightness in the hexagonal vertebral model is used for, Color division is carried out to the multiple current Aerial Images, obtains the pre-selected images of different colour systems.
According to specific embodiment provided by the invention, the invention discloses following technique effects:The present invention is for figure of taking photo by plane The identification location technology of insulator as in is studied, and carries out target classification identification using neural network model, and pass through face Color model obtains pre-selected images, it is ensured that the accuracy of preselected area segmentation orientation range before carrying out Classification and Identification, to carry The recognition accuracy of high-class identification model accurately and rapidly identifies the insulator of transmission line of electricity, for investigation transmission line of electricity in time The failure of insulator provides safeguard in road.
Description of the drawings
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these attached drawings Obtain other attached drawings.
Fig. 1 is the flow chart of electric transmission line isolator recognition methods of the embodiment of the present invention;
Fig. 2 is the structure diagram of electric transmission line isolator identifying system of the embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of electric transmission line isolator recognition methods and systems, accurately and rapidly to know The insulator of other transmission line of electricity, the failure for insulator in investigation transmission line of electricity road in time provide safeguard.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings and specific real Applying mode, the present invention is described in further detail.
Fig. 1 is the flow chart of electric transmission line isolator recognition methods of the embodiment of the present invention.As shown in Figure 1, a kind of power transmission line Road insulator recognition methods mainly includes the following steps that:
Step 101:Obtain analog image and historical background image, the analog image is that the simulation of transmission line of electricity is taken photo by plane figure Picture, the analog image for no background insulation subgraph.
Specifically, according to the size and shape of insulator, on preceding, top, left etc., different views carries out insulation interest respectively Belong to end, umbrella disk and stick core drafting, due to its drafting be threedimensional model, it is therefore desirable in different views to its into Row adjustment.Respectively all parts of insulator are carried out with the setting of material parameters.All parts are combined alignment.Carry out wash with watercolours The setting of environment is contaminated, finished product is rendered.It is arranged according to angle, generates comprehensive analog image.
Step 102:Neural network model is trained by the analog image and the historical background image, is obtained Classification and Identification model.
Specifically, classifying to the analog image by the neural network model, Background output data is obtained And insulation subgraph output data;
Judge the Background output data and insulation sub-image data whether within the scope of error threshold;
It is no to be, it is determined that the neural network model is Classification and Identification model;
If it is not, then adjusting the parameter of the neural network model, make the Background output data and insulation subgraph Data obtain Classification and Identification model within the scope of error threshold.
We open insulator simulation artificial image 20000 as the positive sample in sample database, do not include in Aerial Images The real background image 20000 of insulator is opened as the negative sample in sample database.Sample size is 256 × 256, in sample database Sample distribution is 1:1.
Neural network model is made of 3 groups of convolutional layers and down-sampling layer and 1 full articulamentum.Convolutional layer conv1 By using 256 7 × 7 convolution kernel sliding processing 256 × 256 × 3 by altimetric image;The receptive field of down-sampling layer pool2 Size is 2 × 2;Convolutional layer conv3 and conv5 use 128 6 × 6 convolution kernels and 64 3 × 3 convolution kernels respectively;Under adopt The receptive field size of sample layer pool4 and pool6 are all 3 × 3;Whole network training parameter number shares 65280.
We use mean square deviation as our loss function in the method, as shown in Equation 2.
In formula:L is loss function value;N is batch processing quantity, and present networks take 150;W is network weight, and λ r (W) are canonical ;f(zit) it is that sample exports zitIt is general to be classified the corresponding classification of sample for corresponding t class probabilities in final output Rate.zijFor the corresponding output valve of jth class, zimaxFor input sample XiMaximum value in output.
Network weight more new formula is as follows:
Wt+1=Wt+μVt-α▽L(Wt) (4)
α × 0.1 α=base_floor(iter/5000)(5)
Wherein Wt+1For the weights of t+1 wheels;WtFor the weights of t wheels;μ is the weight of last Grad;VtIt is taken turns for t The updated value of weight;Derivation for loss function to weights;α is learning rate, is updated according to formula (5), Base_ α are learning rate initial values 0.001, and iter is current iterations.
Step 103:Transmission line of electricity is shot, multiple current Aerial Images of transmission line of electricity are obtained.
Step 104:Color division is carried out to the multiple current Aerial Images by hexagonal vertebral model, is obtained not homochromy The pre-selected images of system.
Color is the most obvious characteristic mutually distinguished between object, has important work in the image understanding based on content With.Currently, the existing method for indicating color of image feature includes mainly:Color histogram, color moment and color correlogram etc.. Color histogram mainly counts the color pixel values in image using statistical method;Color moment is by all pictures The color value of vegetarian refreshments regards a probability distribution as, then this discrete features is indicated by its each rank square.Color correlogram It is then that the spatial relationship between color histogram and color is combined carry out character representation.These methods are only counting The color characteristic of image is demonstrated by, there is no really from the enterprising row information expression of semantic content.The most direct content of color Information is the title of color.In natural language, there are the noun of many description colors, different language poor to the classification of color It is very not big.This method will likely appear in the color in the Aerial Images of transmission line of electricity road and be divided into eight colour systems, respectively grey System, white color system, red colour system, yellow class, green system, cyan system, blue series and violet.
Color division is carried out to the multiple current Aerial Images by hexagonal vertebral model and the colour system group, is obtained The pre-selected images of different colour systems, specifically include:
The value range of tone H, saturation degree S and lightness V in acquisition hexagonal vertebral model;
According in the pixel value of each pixel in each current Aerial Images and the hexagonal vertebral model tone, The value range of saturation degree and lightness determines the corresponding colour system of each current Aerial Images, obtains the pre-selected images of different colour systems. Table 1 is the value range that each cie system of color representation cie corresponds to H, S, V variable.
1 each cie system of color representation cie of table corresponds to the value range of H, S, V variable
The pixel for meeting above-mentioned prescribed limit is classified as corresponding cie system of color representation cie, in preselected area division, each face Colour system corresponds to width pre-selection figure, and in preselecting figure, the pixel value of only corresponding color system pixel is remained stationary, and rest of pixels value is set The Xiang Suzhi &#91 of background picture when being generated for training sample;224,224,224].
Step 105:It is exhausted according to the transmission line of electricity in the pre-selected images of different colour systems described in the Classification and Identification Model Identification Edge.
According to specific embodiment provided by the invention, the invention discloses following technique effects:The present invention is for figure of taking photo by plane The identification location technology of insulator as in is studied, and carries out target classification identification using neural network model, and pass through face Color model obtains pre-selected images, it is ensured that the accuracy of preselected area segmentation orientation range before carrying out Classification and Identification, to carry The recognition accuracy of high-class identification model accurately and rapidly identifies the insulator of transmission line of electricity, for investigation transmission line of electricity in time The failure of insulator provides safeguard in road.
Fig. 2 is the structure diagram of electric transmission line isolator identifying system of the embodiment of the present invention.As shown in Fig. 2, a kind of transmission of electricity Line insulator identifying system includes:
Image collection module 201, for obtaining analog image and historical background image, the analog image is transmission line of electricity Simulation Aerial Images, the analog image for no background insulation subgraph.
Training module 202, for being carried out to neural network model by the analog image and the historical background image Training, obtains Classification and Identification model.
The training module 202 specifically includes:
Taxon, for being carried out to the analog image and the historical background image by the neural network model Classification obtains Background output data and insulation subgraph output data;
Judging unit, for judging the Background output data and insulation sub-image data whether in error threshold model In enclosing;
Determination unit is connect with the judgment module, for working as the Background output data and insulator picture number When according within the scope of error threshold, determine that the neural network model is Classification and Identification model;And for working as the Background When output data and insulation sub-image data be not within the scope of error threshold, the parameter of the neural network model is adjusted, is made The Background output data and insulation sub-image data obtain Classification and Identification model within the scope of error threshold.
Taking module 203 obtains multiple current Aerial Images of transmission line of electricity for being shot to transmission line of electricity.
Pre-selected images division module 204, for carrying out face to the multiple current Aerial Images by hexagonal vertebral model Color divides, and obtains the pre-selected images of different colour systems.
The pre-selected images division module 204 specifically includes:
Value range acquiring unit, for obtaining the tone in hexagonal vertebral model, saturation degree and the value model of lightness It encloses;
Pre-selected images division unit, for being taken according to the tone in the hexagonal vertebral model, saturation degree and lightness It is worth range, color division is carried out to the multiple current Aerial Images, obtains the pre-selected images of different colour systems.The pre-selected images Division unit includes:
Pixel value obtains subelement, the pixel value for obtaining each pixel in each current Aerial Images;
Subelement is divided, the pixel value for each pixel in each current Aerial Images of basis and the hexagonal vertebra The value range of tone, saturation degree and lightness in body Model determines the corresponding colour system of each current Aerial Images, obtains difference The pre-selected images of colour system.
Identification module 205, for the power transmission line in the pre-selected images of different colour systems described in the Classification and Identification Model Identification Road insulator.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other The difference of embodiment, just to refer each other for identical similar portion between each embodiment.For system disclosed in embodiment For, since it is corresponded to the methods disclosed in the examples, so description is fairly simple, related place is said referring to method part It is bright.
Principle and implementation of the present invention are described for specific case used herein, and above example is said The bright method and its core concept for being merely used to help understand the present invention;Meanwhile for those of ordinary skill in the art, foundation The thought of the present invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not It is interpreted as limitation of the present invention.

Claims (8)

1. a kind of electric transmission line isolator recognition methods, which is characterized in that the method includes:
Analog image and historical background image are obtained, the analog image is the simulation Aerial Images of transmission line of electricity, the simulation Image for no background insulation subgraph;
Neural network model is trained by the analog image and the historical background image, obtains Classification and Identification mould Type;
Transmission line of electricity is shot, multiple current Aerial Images of transmission line of electricity are obtained;
Color division is carried out to the multiple current Aerial Images by hexagonal vertebral model, obtains the pre-selection figure of different colour systems Picture;
According to the electric transmission line isolator in the pre-selected images of different colour systems described in the Classification and Identification Model Identification.
2. recognition methods according to claim 1, which is characterized in that it is described by the analog image to neural network mould Type is trained, and is obtained Classification and Identification model, is specifically included:
Classified to the analog image and the historical background image by the neural network model, it is defeated to obtain Background Go out data and insulation subgraph output data;
Judge the Background output data and insulation sub-image data whether within the scope of error threshold;
It is no to be, it is determined that the neural network model is Classification and Identification model;
If it is not, then adjusting the parameter of the neural network model, make the Background output data and insulation sub-image data Within the scope of error threshold, Classification and Identification model is obtained.
3. recognition methods according to claim 1, which is characterized in that described to be worked as to the multiple by hexagonal vertebral model Preceding Aerial Images carry out color division, obtain the pre-selected images of different colour systems, specifically include:
The value range of tone, saturation degree and lightness in acquisition hexagonal vertebral model;
According to the value range of tone, saturation degree and lightness in the hexagonal vertebral model, currently take photo by plane to the multiple Image carries out color division, obtains the pre-selected images of different colour systems.
4. recognition methods according to claim 3, which is characterized in that the color according in the hexagonal vertebral model It adjusts, the value range of saturation degree and lightness, color division is carried out to the multiple current Aerial Images, obtains different colour systems Pre-selected images specifically include:
Obtain the pixel value of each pixel in each current Aerial Images;
According to the tone in the pixel value of each pixel in each current Aerial Images and the hexagonal vertebral model, saturation The value range of degree and lightness determines the corresponding colour system of each current Aerial Images, obtains the pre-selected images of different colour systems.
5. a kind of electric transmission line isolator identifying system, which is characterized in that the system comprises:
Image collection module, for obtaining analog image and historical background image, the analog image is the simulation of transmission line of electricity Aerial Images, the analog image for no background insulation subgraph;
Training module is obtained for being trained to neural network model by the analog image and the historical background image To Classification and Identification model;
Taking module obtains multiple current Aerial Images of transmission line of electricity for being shot to transmission line of electricity;
Pre-selected images division module, for carrying out color division to the multiple current Aerial Images by hexagonal vertebral model, Obtain the pre-selected images of different colour systems;
Identification module, for the transmission line insulator in the pre-selected images of different colour systems described in the Classification and Identification Model Identification Son.
6. system according to claim 5, which is characterized in that the training module includes:
Taxon, for being divided the analog image and the historical background image by the neural network model Class obtains Background output data and insulation subgraph output data;
Judging unit, for judging the Background output data and insulation sub-image data whether in error threshold range It is interior;
Determination unit is connect with the judgment module, for existing when the Background output data and insulation sub-image data When within the scope of error threshold, determine that the neural network model is Classification and Identification model;And for being exported when the Background When data and insulation sub-image data be not within the scope of error threshold, the parameter of the neural network model is adjusted, is made described Background output data and insulation sub-image data obtain Classification and Identification model within the scope of error threshold.
7. system according to claim 5, which is characterized in that the pre-selected images division module includes:
Value range acquiring unit, the value range for obtaining the tone in hexagonal vertebral model, saturation degree and lightness;
Pre-selected images division unit, for the value model according to tone, saturation degree and lightness in the hexagonal vertebral model It encloses, color division is carried out to the multiple current Aerial Images, obtains the pre-selected images of different colour systems.
8. system according to claim 5, which is characterized in that the pre-selected images division unit includes:
Pixel value obtains subelement, the pixel value for obtaining each pixel in each current Aerial Images;
Subelement is divided, the pixel value for each pixel in each current Aerial Images of basis and the hexagonal centrum mould The value range of tone, saturation degree and lightness in type determines the corresponding colour system of each current Aerial Images, obtains different colour systems Pre-selected images.
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